Simple Machines 2

Match the definition of each simple machines.

• A wheel with grooved rim where a cord

• Wedge

• -2 inclined planes together

• Wheel and Axle

• A twisted inclined plane

• Pulley

• -A wheel connected to a rod

• Inclined plane

• Sloping ramp, often at a right triangle

• Screw

Match the description of the different kinds of levers

Groups:

(a) 1st Class Lever

,

(b) 2nd Class Lever

,

(c) 3rd Class Lever

• 
• The fulcrum is between the load and the force

• 
• The fulcrum is at one end , the load in the middle, and the force at the other end.

• 
• 
• 
• The fulcrum is at the end, the force in the middle, and the load on the other end.

• 

What is the primary purpose of simple machines?

• To perform work more easily

• To increase the weight of objects

• To make objects more complex

• To reduce the size of objects

Which of the following is NOT a type of simple machine?

• Lever

• Inclined plane

• Pulley

• Motor

How does a lever help in lifting heavy objects?

• By increasing the weight of the object

• By reducing the distance to move the object

• By pivoting around a fulcrum to use less effort

• By using a motor to lift the object

Where can you commonly find pulleys being used?

• In bicycles

• In flagpoles

• In computers

• In bookshelves

What is the function of a wheel and axle in vehicles?

• To increase the speed of the vehicle

• To help move the car forward with less effort

• To decrease the weight of the vehicle

• To make the vehicle more complex

What simple machines are found in the following?

a

b

c

Wedge, wheel & axle

Screw, wedge, and wheel & axle

Lever, wedge and wheel & axle

What type of simple machine is shown?

• inclined plane

• wheel and axle

• pulley

• lever

• Screw

What type of simple machine is use in the figure? Choose all that apply.

• inclined plane

• pulley

• lever

• wheel and axle

• Wedge